"But if it doesn't exist already, what about a mod that unlocks the generic lots to make them available for club hangouts? Or for any gathering for that matter, like weddings or parties. But i have a youth center for all my child/teen clubs, but their shared clubhouse is set as a lounge at the moment, so it's always over run with adults who drink all their coffee and hog the dance floor I've put there.... Same issue for an elder-only country club set as a nightclub.
Is something like this even possible?"
Is possible:
http://www.modthesims.info/download.php?t=575470